- 한국 어린이의 영구 견치 및 소구치의 맹출 시기와 치근 발육
- ㆍ 저자명
- 정창신,정연화,조봉혜,Cheong. Chang-Shin,Jung. Yun-Hoa,Cho. Bong-Hae
- ㆍ 간행물명
- 대한구강악안면방사선학회지
- ㆍ 권/호정보
- 2010년|40권 3호|pp.131-135 (5 pages)
- ㆍ 발행정보
- 대한구강악안면방사선학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Purpose : The aim of this study was to investigate the timing and sequence of eruption of permanent canine and premolars, and to evaluate tooth calcification stage on emergence in Korean children. Materials and Methods : The sample was comprised of 1,266 children (male 720, female 546) aged from 7-13 years. Tooth eruption and calcification stages were determined through oral and panoramic radiographic examination, respectively. Probit analysis was used to calculate the timing of tooth eruption and tooth calcification stage from these cross-sectional data. Results : In both males and females, eruption occurred around the time when one third of tooth root or more was formed. The sequence was as follows: first premolar, canine, and second premolar in maxilla, and canine, first premolar and second premolar in mandible. Tooth eruption occurred earlier in girls compared with boys, averaging 0.63 years. Conclusions : Eruption sequence is identical in males and females with a trend for females to erupt earlier than males. Tooth eruption becomes earlier over the past decades in Korean children.